<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 标签页 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          tab-position="left"
          :before-leave="beforeTabLeave"
          @tab-click="tabChange"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTabDate"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="item"
                  v-for="(item, index) in item.attr_vals"
                  :key="index"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabDate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals" disabled></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="uploadSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- Two-way Data-Binding -->
            <quill-editor
              ref="myQuillEditor"
              v-model="addForm.goods_introduce"
              :options="editorOption"
              @blur="onEditorBlur($event)"
              @focus="onEditorFocus($event)"
              @ready="onEditorReady($event)"
            />
            <!-- Or manually control the data synchronization -->
            <!-- <quill-editor
              :content="content"
              :options="editorOption"
              @change="onEditorChange($event)"
            /> -->
            <!-- 添加商品按钮 -->
            <el-button type="primary" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览弹窗 -->
    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="50%"
    >
      <img :src="previewUrl" class="previewClass" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'

export default {
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 1,
        goods_number: 1,
        goods_weight: 1,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ]
      },
      cateList: [],
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      value: '',
      manyTabDate: [],
      onlyTabDate: [],
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewUrl: '',
      previewDialogVisible: false,
      editorOption: {}
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.cateList = res.data
      // console.log(res.date)
    },
    handleChange() {},
    beforeTabLeave(ac, oc) {
      if (this.addForm.goods_cat.length !== 3 && oc === '0') {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabChange(tab) {
      if (tab.index === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        if (res.meta.status !== 200) {
          this.$message.error(res.meta.msg)
        }
        // console.log(this.addForm.goods_cat)
        res.data.forEach(element => {
          if (element.attr_vals.length !== 0) {
            element.attr_vals = element.attr_vals.split(',')
          }
        })
        // console.log(res.data)
        this.manyTabDate = res.data
      } else if (tab.index === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (res.meta.status !== 200) {
          this.$message.error(res.meta.msg)
        }
        this.onlyTabDate = res.data
        // console.log(res.data)
        // console.log(this.addForm.goods_cat)
      }
    },
    handlePreview(file) {
      // console.log(file)
      this.previewUrl = file.response.data.url
      this.previewDialogVisible = true
    },
    handleRemove(file) {
      // console.log(file.response.data.tmp_path)
      const pic = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(x => {
        return x.pic === pic
      })
      this.addForm.pics.splice(index)
    },
    uploadSuccess(response) {
      const pic = response.data.tmp_path
      this.addForm.pics.push({
        pic: pic
      })
      // console.log(this.addForm.pics)
    },
    onEditorBlur(event) {},
    onEditorFocus(event) {},
    onEditorReady(event) {},
    add() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的数据')
        }
        const commitForm = _.cloneDeep(this.addForm)
        commitForm.goods_cat = commitForm.goods_cat.join(',')
        // console.log(commitForm)
        // console.log(this.manyTabDate)
        // console.log(this.onlyTabDate)
        this.manyTabDate.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(',')
          }
          commitForm.attrs.push(newInfo)
        })
        this.onlyTabDate.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          commitForm.attrs.push(newInfo)
        })
        // 保存数据
        // console.log(commitForm)
        const { data: res } = await this.$http.post('goods', commitForm)
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.previewClass {
  width: 100%;
}
.el-button {
  margin: 10px 0 0 0;
}
</style>
